公开(公告)号：US20220370263A1

公开(公告)日：2022-11-24

申请号：US17771887

申请日：2020-10-27

Applicant: ZUIKO CORPORATION

Inventor： Daisuke FURUKAWA ,  Takahiro SHIMADA

IPC: A61F13/49 ,  A61F13/532 ,  A61F13/511

Abstract: The present invention aims to achieve both a function of diffusing excretions or the like in a longitudinal direction of an absorber and maintenance of adhesion to a wearer in a direction orthogonal to the longitudinal direction. The absorber includes a top sheet (21), a back sheet (22) opposed to the top sheet (21), and an absorbent core (23) extending in a predetermined longitudinal direction between the top sheet (21), and the back sheet (22) and configured to absorb excretions or the like of the wearer. The absorbent core (23) has a plurality of opening portions (23a) each having a shape that opens toward the top sheet (21) and extends in the longitudinal direction and each arranged in the longitudinal direction. An interval (G1) in the longitudinal direction between two opening portions (23a) adjacent to each other among the plurality of opening portions (23a) is set to a dimension equal to or larger than a dimension (D1) in the longitudinal direction of each of the two adjacent opening portions (23a).

公开(公告)号：US20220287892A1

公开(公告)日：2022-09-15

申请号：US17619856

申请日：2020-06-22

Applicant: ZUIKO CORPORATION

Inventor： Daisuke FURUKAWA ,  Natsuki IKEDA

IPC: A61F13/537 ,  A61F13/535

Abstract: Provided is an absorbent article capable of fully utilizing absorption capacity of an absorption layer downstream in a liquid supply direction in a structure in which a plurality of absorption layers are laminated. An absorbent article-includes a first absorption layer and a second absorption layer configured to absorb liquid, and a diffusion layer that is interposed between the first absorption layer and the second absorption layer and diffuses the liquid in a direction in which a plane of the second absorption layer spreads. The first absorption layer includes an absorbent resin configured to absorb liquid. The first absorption layer includes an absorption region including the absorbent resin, and a passage region that has a lower density of the absorbent resin than a density of the absorbent resin in the absorption region. The passage region allows the liquid to pass through the diffusion layer.

公开(公告)号：US20230037404A1

公开(公告)日：2023-02-09

申请号：US17789233

申请日：2020-12-11

Applicant: ZUIKO CORPORATION

Inventor： Takahiro SHIMADA ,  Daisuke FURUKAWA

IPC: A61F13/15

Abstract: The method of the present invention includes the steps of: arranging a plurality of non-continuous sheets of a predetermined length intermittently and successively in the conveyance direction on the continuous sheet so that the continuous elastic members are sandwiched between the non-continuous sheets and the continuous sheet; in an overlapping area where the non-continuous sheets overlap with the continuous sheet, attaching the continuous sheet and the non-continuous sheets to each other by welding the sheets to each other in a predetermined pattern, thus producing a continuous laminate; and in a non-overlapping area where the non-continuous sheets do not overlap with the continuous sheet, heating the continuous sheet in the same pattern as said pattern.

公开(公告)号：US20220395405A1

公开(公告)日：2022-12-15

申请号：US17619390

申请日：2020-07-02

Applicant: ZUIKO CORPORATION

Inventor： Takahiro SHIMADA ,  Daisuke FURUKAWA

IPC: A61F13/15 ,  B05B13/02

Abstract: An absorbent body in which a larger amount of a granular absorbent substance penetrates into the inside of a fiber sheet is produced. A fiber sheet having napped one main surface is supplied to a conveying device and conveyed while the other main surface of the fiber sheet is being sucked through a conveyance surface. A granular absorbent substance is sprayed onto the napped one main surface of the fiber sheet to cause the substance to penetrate into the inside of the fiber sheet in a suction section. A pressure difference increasing device is provided that faces the one main surface of the fiber sheet sprayed with the absorbent substance and being conveyed in the suction section, and that suppresses air from flowing through the fiber sheet inward from the conveyance surface to increase the pressure difference between the conveyance surface side and the opposite side of the fiber sheet.

公开(公告)号：US20220378626A1

公开(公告)日：2022-12-01

申请号：US17619436

申请日：2020-05-08

Applicant: ZUIKO CORPORATION

Inventor： Takahiro SHIMADA ,  Daisuke FURUKAWA

IPC: A61F13/15 ,  A61F13/532

Abstract: A base sheet having one main surface applied with an adhesive is supplied to a conveyance device and the base sheet is conveyed while the other main surface of the base sheet is suctioned. A first laminate is formed by overlapping the one main surface of the base sheet with the other main sheet of a fiber sheet having one main surface nap-raised; then, a granular absorbent material is scattered on the one main surface of the fiber sheet; the scattered absorbent material is infiltrated into the fiber sheet when the other main surface of the base sheet is suctioned; then, a second laminate is formed by overlapping the one main surface of the fiber sheet with the one main surface of a cover sheet applied with an adhesive; and then the resultant sheet is compressed in the thickness direction by means of a compression means and the applied adhesive.

公开(公告)号：US20220265484A1

公开(公告)日：2022-08-25

申请号：US17629534

申请日：2020-07-15

Applicant: ZUIKO CORPORATION

Inventor： Takahiro SHIMADA ,  Daisuke FURUKAWA

IPC: A61F13/15

Abstract: A method for manufacturing an underpants-type wearable article where a joining defect of an elastic stretchable member can be easily checked. The method includes: a rubber-thread-sandwiching-step; a continuous-body-forming-step of forming continuous bodies of front and backside waist members; a side-fusing-step of joining both side portions of the front and back members to each other by side fusing using a pair of side fusing portions; a rubber-thread-cutting-step of cutting the rubber threads of the respective continuous bodies of the front and back members at a protruding portion of a boundary region which becomes a boundary of individual wearable article; a joining-state-inspection-step of inspecting a joining state of the rubber threads to a pair of nonwoven fabric; and a continuous-body-cutting-step of obtaining individual wearable articles by cutting the respective continuous bodies of the front and back member at the protruding portion of the boundary region.

公开(公告)号：US20210169705A1

公开(公告)日：2021-06-10

申请号：US16768134

申请日：2018-11-22

Applicant: ZUIKO CORPORATION

Inventor： Kouji UTANI ,  Daisuke FURUKAWA

IPC: A61F13/15 ,  D04H1/44

Abstract: An apparatus for manufacturing an absorbent core includes: a dispenser for dispensing a fiber; a fiber-stacking drum for stacking the dispensed fiber on the outer circumferential surface while sucking the fiber toward an inside; and a fixed frame for rotatably supporting the fiber-stacking drum. The fiber-stacking drum includes: a rotation shaft; a wheel attached to the distal end of the rotation shaft; and a fiber-stacking ring provided on an outer circumference portion of the wheel for stacking the fiber A suction chamber is fixed to the fixed frame The suction chamber is arranged on an inner side of the fiber-stacking ring and produces a suction force toward an inner circumference of the fiber-stacking ring. The fiber-stacking drum is supported by the fixed frame so as to be slidable in an axial direction of the rotation shaft; and the wheel is removably attached to the distal end of the rotation shaft via a fastener.